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Significant changes in physical activity among pregnant women in the UK as assessed by accelerometry and self-reported activity

European Journal of Clinical Nutrition volume 60, pages 393–400 (2006)Cite this article

Abstract

Objective:

Research on the impact of maternal physical activity on pregnancy outcomes has often employed subjective measures of physical activity obtained by diary or questionnaire. This study investigates the feasibility of using accelerometry as an objective measure of physical activity of pregnant women compared with subjective data obtained via activity recall among pregnant women.

Design:

Activity data were collected prospectively on 57 women at 12, 16, 25, 34 and 38 weeks of gestation. Total daily physical activity was assessed by ambulatory accelerometer and activity interview (self-report). Maternal personality variables (health value, extroversion) were assessed by established scales.

Setting:

Leicestershire, UK.

Subjects:

Pregnant women were recruited by voluntary participation via antenatal booking clinics. In all, 64 pregnant women with low-risk pregnancy were enrolled onto the study, of whom 57 completed the study.

Results:

Mean 24 h physical activity levels (PAL) decreased significantly from second to third trimester as assessed by self-report interview (1.51–1.29 Metabolic Equivalent TEE-h/day, P<0.01) and accelerometry (200.05–147.42 counts/min, P<0.01). The correlation between the two measures declined as pregnancy progressed (r value ranging from 0.55 to 0.08). Compliance with the accelerometers declined from 90% at 12 weeks to 47% at 34 weeks (P<0.01). Compliance with the self-report interviews was 100%. Those who fully complied with the accelerometry demonstrated a significantly higher health value (P<0.05) and a significantly greater level of extroversion (P<0.05) than those who did not.

Conclusions:

Accelerometers and self-reported activity interviews both indicated a significant decline in PAL during pregnancy. Although subjects showed a willingness to use both methods, accelerometers resulted in variable compliance with 72 h monitoring. Both techniques may be limited by the need to measure low levels of physical activity during the third trimester.

Sponsorship:

Cambridge Neurotechnology Ltd, UK, assisted with the provision of Actiwatch accelerometers.

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Acknowledgements

This study was funded by Loughborough University. Grateful thanks are extended to Cambridge Neurotechnology Ltd, Cambridge, UK for the supply of equipment.

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Authors and Affiliations

  1. Department of Human Sciences, Loughborough University, Loughborough, Leicestershire, UK

    E K Rousham & H Gross

  2. School of Nursing, Midwifery and Social Work, University of Manchester, Manchester, UK

    P E Clarke

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  1. E K Rousham
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  2. P E Clarke
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  3. H Gross
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Corresponding author

Correspondence to E K Rousham.

Additional information

Guarantor: P Clarke.

Contributors: PEC collected data and carried out the statistical analysis, EKR worked on the study design, data analysis and writing of the paper, HG worked on the study design and the psychological assessment and analysis.

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Rousham, E., Clarke, P. & Gross, H. Significant changes in physical activity among pregnant women in the UK as assessed by accelerometry and self-reported activity. Eur J Clin Nutr 60, 393–400 (2006). https://doi.org/10.1038/sj.ejcn.1602329

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